55417844 has 12 divisors (see below), whose sum is σ = 98429184. Its totient is φ = 27295224.

The previous prime is 55417837. The next prime is 55417849. The reversal of 55417844 is 44871455.

It is a super-4 number, since 4×55417844⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 55417798 and 55417807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55417849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103124 + ... + 103659.

It is an arithmetic number, because the mean of its divisors is an integer number (8202432).

Almost surely, 2^55417844 is an apocalyptic number.

It is an amenable number.

55417844 is a deficient number, since it is larger than the sum of its proper divisors (43011340).

55417844 is a wasteful number, since it uses less digits than its factorization.

55417844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206854 (or 206852 counting only the distinct ones).

The product of its digits is 89600, while the sum is 38.

The square root of 55417844 is about 7444.3162211180. The cubic root of 55417844 is about 381.2558725603.

The spelling of 55417844 in words is "fifty-five million, four hundred seventeen thousand, eight hundred forty-four".